Unlicensed Spectrum Sharing Method, Base Station Using the Same, and User Equipment Using the Same

1. An unlicensed spectrum sharing method applicable to a user equipment, comprising: receiving a configuration message over a first component carrier in a licensed spectrum to operate in an unlicensed spectrum, wherein the configuration message comprises a delay time value associated with activating a second component carrier in the unlicensed spectrum, and the delay time value is used to delay the activation of the second component carrier in the unlicensed spectrum; receiving a message of the UE over the second component carrier in the unlicensed spectrum in response to receiving the configuration message, wherein the first component carrier and the second component carrier are aggregated carriers, wherein the configuration message activates a first time slot of the second component carrier and setting dormant a second time slot of the second component carrier; and receiving a re-configuration message over the first component carrier in the licensed spectrum to operate in the unlicensed spectrum.

2. The method of claim 1 further comprising: detecting a transmission of another UE in the unlicensed spectrum; and reporting the transmission of the another UE.

3. The method of claim 2 , further comprising: receiving a notification for the transmission of the another UE in the unlicensed spectrum; and transmitting an acknowledgement of the notification.

4. The method of claim 1 further comprising: receiving a first indicator for a capability to transmit or receive over the second component carrier in the unlicensed spectrum; and transmitting a second indicator for a capability to transmit or receiving over the second component carrier in the unlicensed spectrum.

5. The method of claim 1 further comprising: receiving an activation message in the media access control (MAC) layer to use the second component carrier in the unlicensed spectrum in response to receiving the configuration message.

6. The method of claim 1 wherein receiving the re-configuration message over the first component carrier comprising: receiving the re-configuration message in the physical over the first component carrier to activate the first time slot or to set dormant the second time slot.

7. The method of claim 1 , wherein the configuration message further comprising: a duration of the activation of the second component carrier in the unlicensed spectrum.

8. A user equipment comprising: a receiver that receives wireless transmission; and a processing circuit coupled to the receiver and is configured for: receiving via the receiver a configuration message over a first component carrier in a licensed spectrum to operate in an unlicensed spectrum, wherein the configuration message comprises a delay time value associated with activating a second component carrier in the unlicensed spectrum, and the delay time value is used to delay the activation of the second component carrier in the unlicensed spectrum; receiving via the receiver a message of the UE over the second component carrier in the unlicensed spectrum in response to receiving the configuration message, wherein the first component carrier and the second component carrier are aggregated carriers, wherein the configuration message activates a first time slot of the second component carrier and setting dormant a second time slot of the second component carrier; and receiving via the receiver a re-configuration message over the first component carrier in the licensed spectrum to operate in the unlicensed spectrum.

9. An unlicensed spectrum sharing method applicable to a base station, comprising: transmitting a configuration message over a first component carrier in a licensed spectrum to operate in an unlicensed spectrum, wherein the configuration message comprises a delay time value associated with activating a second component carrier in the unlicensed spectrum, and the delay time value is used to delay the activation of the second component carrier in the unlicensed spectrum; transmitting a user message over the second component carrier in the unlicensed spectrum in response to receiving the configuration message, wherein the first component carrier and the second component carrier are aggregated carriers, wherein the configuration message activates a first time slot of the second component carrier and setting dormant a second time slot of the second component carrier; and transmitting a re-configuration message over the first component carrier in the licensed spectrum to operate in the unlicensed spectrum.

10. The method of claim 9 further comprising: detecting a transmission of a user equipment in the unlicensed spectrum; or receiving a report of the transmission of the user equipment in the unlicensed spectrum.

11. The method of claim 10 further comprising: transmitting a notification for the transmission of the user equipment in the unlicensed spectrum; and receiving an acknowledge of the notification.

12. The method of claim 9 further comprising: transmitting a first indicator for a capability to transmit or receive over the second component carrier in the unlicensed spectrum; and receiving a second indicator for a capability to transmit or receiving over the second component carrier in the unlicensed spectrum.

13. The method of claim 9 further comprising: transmitting an activation message in the media access control (MAC) layer to use the second component carrier in the unlicensed spectrum in response to transmitting the configuration message.

14. The method of claim 9 wherein transmitting the re-configuration message over the first component carrier comprising: transmitting the re-configuration message in the physical layer over the first component carrier to activate the first time slot or to set dormant the second time slot.

15. The method of claim 9 , wherein the configuration message further comprising: a duration of the activation of the second component carrier in the unlicensed spectrum.